Ubuntu update for intel-microcode



Risk High
Patch available YES
Number of vulnerabilities 8
CVE-ID CVE-2024-28956
CVE-2024-43420
CVE-2024-45332
CVE-2025-20623
CVE-2025-20012
CVE-2025-24495
CVE-2025-20054
CVE-2025-20103
CWE-ID CWE-399
CWE-200
CWE-696
CWE-909
CWE-248
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

intel-microcode (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Resource management error

EUVDB-ID: #VU109000

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-28956

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to an error in the hardware support for prediction-domain isolation dubbed "Indirect Target Selection". A malicious guest can infer the contents of arbitrary host memory, including memory assigned to other guests.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 25.04

intel-microcode (Ubuntu package): before 3.20250512.0ubuntu0.16.04.1+esm1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7535-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Information disclosure

EUVDB-ID: #VU109423

Risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-43420

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to shared microarchitectural predictor state that influences transient execution. A local user can gain access to sensitive information.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 25.04

intel-microcode (Ubuntu package): before 3.20250512.0ubuntu0.16.04.1+esm1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7535-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Information disclosure

EUVDB-ID: #VU109425

Risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-45332

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to shared microarchitectural predictor state that influences transient execution. A local user can gain access to sensitive information.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 25.04

intel-microcode (Ubuntu package): before 3.20250512.0ubuntu0.16.04.1+esm1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7535-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Information disclosure

EUVDB-ID: #VU109424

Risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-20623

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to shared microarchitectural predictor state that influences transient execution. A local user can gain access to sensitive information.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 25.04

intel-microcode (Ubuntu package): before 3.20250512.0ubuntu0.16.04.1+esm1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7535-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Incorrect behavior order

EUVDB-ID: #VU109171

Risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:P/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-20012

CWE-ID: CWE-696 - Incorrect Behavior Order

Exploit availability: No

Description

The vulnerability allows a local attacker to gain access to sensitive information on the system. The vulnerability exists due to incorrect behavior order. An attacker with physical access can disclose sensitive information on the target system.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 25.04

intel-microcode (Ubuntu package): before 3.20250512.0ubuntu0.16.04.1+esm1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7535-1


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Missing initialization of resource

EUVDB-ID: #VU109169

Risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-24495

CWE-ID: CWE-909 - Missing initialization of resource

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to incorrect initialization of resource in the branch prediction unit. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 25.04

intel-microcode (Ubuntu package): before 3.20250512.0ubuntu0.16.04.1+esm1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7535-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Uncaught Exception

EUVDB-ID: #VU109427

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-20054

CWE-ID: CWE-248 - Uncaught Exception

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to an uncaught exception in the core management mechanism for some Intel Processors. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 25.04

intel-microcode (Ubuntu package): before 3.20250512.0ubuntu0.16.04.1+esm1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7535-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Resource management error

EUVDB-ID: #VU109426

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-20103

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient resource pool in the core management mechanism for some Intel Processors. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 25.04

intel-microcode (Ubuntu package): before 3.20250512.0ubuntu0.16.04.1+esm1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-7535-1


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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